Packed Bed Reactor with Particles CFD Simulation

$120.00 Student Discount

In this project, a Packed Bed Reactor with Particles (DPM) has been simulated, and the results of this simulation have been investigated.

Click on Add To Cart and obtain the Geometry file, Mesh file, and a Comprehensive ANSYS Fluent Training Video.

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Special Offers For Single Product

If you need the Geometry designing and Mesh generation training video for one product, you can choose this option.
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The journal file in ANSYS Fluent is used to record and automate simulations for repeatability and batch processing.
editable geometry and mesh allows users to create and modify geometry and mesh to define the computational domain for simulations.
The case and data files in ANSYS Fluent store the simulation setup and results, respectively, for analysis and post-processing.
Geometry, Mesh, and CFD Simulation methodologygy explanation, result analysis and conclusion
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Packed Bed Reactor with Particles, CFD Simulation Training with Ansys Fluent

Reactor models vary from pseudo-homogeneous to heterogeneous, from one-dimensional to three-dimensional, and from assumed flow patterns to computed flow and transport fields.

Packed bed reactors, also known as fixed-bed reactors, are often used for catalytic processes. A packed bed reactor (PBR) is preferred for heterogeneous reactions, where the solid-fluid contact dramatically influences the reaction rate. A PBR is a cylindrical vessel filled with solids (a reactant). The other reactant is allowed to enter the bed through the inlet face.

For the fluidized bed membrane reactor, it is well known that a virtually isothermal condition can be achieved. In contrast, for the packed bed membrane reactor, a temperature drop in the first part of the reactor is always observed irrespective of the temperature profile at the reactor wall.

A fluidized bed typically allows for a more uniform product than other reactor designs. There are a few disadvantages to using fluidized beds. Unlike fluidized beds, pack beds have poor mixing and are heterogeneous.

Geometry & Mesh

The geometry of the solution is a 2d rectangle in the XY plane. The rectangle length is 120 mm, and the width is 40 mm. The geometry is designed in design modeler software:

Packed Bed

Ansys meshing software is used to generate meshes of the solution. The elements are all in quad shape (Structure), and the number of them is equal to 5000:

Packed Bed

Packed bed Reactor with Particles CFD Simulation

We consider several assumptions to simulate the present model:

  • We perform a pressure-based solver.
  • Simulation has only examined fluid behavior; in other words, heat transfer simulation has not been performed.
  • The present model is unsteady.
  • The effect of gravity is -9.81 m.s-2 along the y-axis in the present model.

The following table represents a summary of the defining steps of the problem and its solution:

k-omega Viscous model
SST k-epsilon model
mixture turbulence multiphase model
eulerian Multiphase model
implicit formulation
gas and particles phases
implicit formulation
Boundary conditions (Packed Bed)
velocity-inlet Inlet
0 pascal supersonic/initial gauge pressure mixture
0.05 m.s-1 velocity magnitude flow
1 volume fraction
0 m.s-1 velocity magnitude particles
0 volume fraction
Pressure outlet Outlet
0 pascal gauge pressure mixture
wall upper and bottom wall
stationary wall wall motion
Solution Methods (Packed Bed)
Phase Coupled SIMPLE   Pressure-velocity coupling
PRESTO pressure Spatial discretization
first-order upwind momentum
first-order upwind turbulent dissipation rate
first-order upwind turbulent kinetic energy
first-order upwind volume fraction
Initialization (Packed Bed)
Standard, patch Initialization method
0 m.s-1 flow velocity (x)
0 m.s-1 flow velocity (y)
0 pascal gauge pressure
0 m.s-1 particle velocity (x,y)
0 particle volume fraction
0.65 particle volume fraction patch

Results & Discussion

At the end of the solution process, two-dimensional contours related to pressure and velocity and volume fraction of water and alumina particles are obtained. At first, water flow enters the reactor, passes through the particles (Particles are packed and fixed at the lower half of the reactor), and finally moves to the outlet face at the same speed as inlet velocity. Also, static pressure contour is obtained in the whole domain, and as it can be seen, it decreases while passing through the particles, and after that, till reaching the outlet face, it’s constant and equal to zero.

Packed Bed


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